Senior Systems Engineer – Digital Engineering / MBSE

RTX•Fullerton, CA
•$95,500 - $181,700•Onsite

About The Position

The Senior Systems Engineer – Digital Engineering / MBSE Innovator will advance digital engineering practices across RTX programs. As a Model-Based Systems Engineering (MBSE) subject matter expert, the engineer takes technical ownership of modeling activities, guides program teams in applying MBSE methods, and contributes to the evolution of the Digital Engineering Ecosystem. The role leads system-model development, shapes modeling approaches, and ensures model-based artifacts support design, analysis, verification, and program decision-making. The engineer collaborates across multidisciplinary engineering teams, influences technical direction, and mentors early-career engineers. This is an onsite role located in El Segundo or Fullerton, California. An active, transferable U.S. government Secret security clearance is required before the start date, and U.S. citizenship is required.

Requirements

  • A STEM degree and at least 5 years of relevant engineering experience.
  • Experience applying systems engineering to hardware or integrated hardware/software system development.
  • Experience developing system requirements, architectures, and interface definitions with traceability across engineering artifacts.
  • Experience with SysML modeling using Cameo Systems Modeler, Cameo Enterprise Architecture, or equivalent MagicDraw tools, and Teamwork Cloud collaboration.
  • Active and transferable U.S. government-issued Secret security clearance required before the start date; an active and existing clearance is required on day one.
  • U.S. citizenship, because only U.S. citizens are eligible for the required security clearance.

Nice To Haves

  • Experience leading MBSE adoption, modeling activities, or small modeling teams within engineering programs.
  • Experience with engineering design or analysis tools used across the product development lifecycle.
  • Familiarity with digital thread concepts, digital twin workflows, and integration of MBSE tools within Digital Engineering environments.
  • Experience using Syndeia or similar tools to connect models with requirements, design, or analysis data.
  • Exposure to Model-Based Product Line Engineering (MBPLE) and reusable SysML architectures.
  • Familiarity with data-visualization tools such as Power BI, Kibana, or Grafana.

Responsibilities

  • Lead development of SysML models capturing stakeholder needs, requirements, behavior, architecture, and interfaces.
  • Guide MBSE implementation on programs, aligning modeling approaches with systems engineering processes, program objectives, and customer expectations.
  • Use system models to generate specifications, perform trade studies, support interface definition, and assess technical performance.
  • Integrate MBSE models into digital threads, linking requirements, design, and analysis across engineering tools and environments.
  • Promote and apply reusable modeling practices, standards, and MBSE starter models to improve consistency and efficiency.
  • Mentor Systems Engineers and Modelers by sharing best practices and enabling adoption of MBSE workflows.
  • Communicate technical progress, risks, and recommendations to program leadership, and present model insights to support engineering decisions.

Benefits

  • Relocation assistance
  • Medical insurance
  • Dental insurance
  • Vision insurance
  • Life insurance
  • Short-term disability
  • Long-term disability
  • 401(k) match
  • Flexible spending accounts
  • Flexible work schedules
  • Employee assistance program
  • Employee Scholar Program
  • Parental leave
  • Paid time off
  • Holidays
  • Potential annual short-term and/or long-term incentive compensation, subject to eligibility and other factors
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